860166005258 has 8 divisors (see below), whose sum is σ = 1474570294752. Its totient is φ = 368642573676.

The previous prime is 860166005239. The next prime is 860166005273. The reversal of 860166005258 is 852500661068.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30720214460 + ... + 30720214487.

It is an arithmetic number, because the mean of its divisors is an integer number (184321286844).

Almost surely, 2^860166005258 is an apocalyptic number.

860166005258 is a deficient number, since it is larger than the sum of its proper divisors (614404289494).

860166005258 is a wasteful number, since it uses less digits than its factorization.

860166005258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61440428956.

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 860166005258 in words is "eight hundred sixty billion, one hundred sixty-six million, five thousand, two hundred fifty-eight".